In the error case of socket_fs_accept() the Unconfirmed utility was
incompletely applied with the result of executing the cleanup routines
in the wrong order.
Fixes#4417
The 'read' and 'write' utilities are from a time before the VFS API
as os/vfs.h was available. They rely on the (now removed) blocking
semantics of the packet-stream interface.
The only remaining legitimate use case of the direct interaction with
the file-system session without VFS is the back end of gcov, which needs
a way to exfiltrate the statistical data using a channel that is
independent from the libc or the VFS.
Issue #4390
Do not import a freshly allocated buffer to all contexts eagerly.
Instead check buffer list in context's 'exec_buffer' call and import
only buffers needed and not present before GPU execution. This leads to
improved performance for applications that use many OpenGL contexts
(e.g., VirtualBox 6).
issue #4380
Retrieve multiple GPU sessions from VFS plugin, take advantage of buffer
import/export functionallity in order to implement gem context support.
Multiple contexts share all GPU buffers, but use different GPU sessions
and thus, differnt page tables and hardware contexts.
issue #4380
Synchronize GPU completion by calling 'read' of the vfs_gpu plugin. This
enables pthreads to wait for GPU completions instead of the main EP.
issue #4380
* let iris handle buffer management, this implies that BOs are mapped to
the PPGTT during buffer execution and unmapped by iris later, for this
to work buffers need to be unmapped when allocating cached BOs
(vma_free) which requires a patch
* support lseek (drm_lseek for now) for determining object size
issue #4380
The socket type (in the lower bits) maybe ORed with SOCK_CLOEXEC and
SOCK_NONBLOCK options (in the higher bits). Currently, supported values
are SOCK_STREAM (1) and SOCK_DGRAM (2), so just take the lower 2 bits.
This fixes treating `SOCK_STREAM` sockets as UDP if additional flags
were set.
Fixes#4370
The path for the `nameserver` file was fixed to `/socket/nameserver`.
So, if the socket directory was configured differing from `/socket`, DNS
did not work. Now the default path for the `nameserver` takes into
account the path configured in the `socket` libc config attribute.
Fixes#4318Fixes#4343
This patch changes the 'Allocator' interface to the use of 'Attempt'
return values instead of using exceptions for propagating errors.
To largely uphold compatibility with components using the original
exception-based interface - in particluar use cases where an 'Allocator'
is passed to the 'new' operator - the traditional 'alloc' is still
supported. But it existes merely as a wrapper around the new
'try_alloc'.
Issue #4324
This patch replaces the 'Ram_allocator::alloc' RPC function by a
'try_alloc' function, which reflects errors as 'Attempt' return value
instead of an exception.
Issue #4322
Issue #3612
In the default setting the number of root ports is set to 4. This
also limits the number of USB host devices that may be attached to
the VM. Since the USB webcam shares the slots, that leaves us with
only 3 available USB2 slots to attach USB host devices. Depending on
the use-case that might not be enough.
This commit statically increases the number of ports to 8 each and
adapts the qemu-usb glue-code accordingly.
Many thanks to Raphael for initial investigation and workaround.
Fixes#4310.
Apparently the iris driver does not make use of tiling by the kernel, so
we shortcut the 'SET_TILING' call to keep iris happy with this quickfix.
However, tiling information may get lost, if the iris driver ever calls
'MMAP_GTT' and no fence is configured for the buffer. A follow-up commit
should address this shortcoming in the future.
Issue #4284
The new 'Env::try_session' method mirrors the existing 'Env::session'
without implicitly handling exceptions of the types 'Out_of_ram',
'Out_of_caps', 'Insufficient_ram_quota', and 'Insufficient_cap_quota'.
It enables runtime environments like init to reflect those exceptions to
their children instead of paying the costs of implicit session-quota
upgrades out of the own pocket.
By changing the 'Parent_service' to use 'try_session', this patch fixes
a resource-exhaustion problem of init in Sculpt OS that occurred when
the GPU multiplexer created a large batch of IO_MEM sessions, with each
session requiring a second attempt with the session quota upgraded by
4 KiB.
Issue #3767
'Out_of_ram' was so far the only exception a client had to deal with
during buffer managment. Allocating memory, however, does not only
consume RAM quota but CAP quota as well.
This commit tries to mitigate that shortcoming by reflecting the
'Out_of_caps' state back to the client. Furthermore it allows for
resource accounting on certain client allocations, e.g. buffers.
Fixes#4284.
Some guests don't handle remote wake up correctly causing devices to
stop functioning. Therefore, we disable the remote wake up bit (5) in
`bmAttributes` of the device configuration descriptor.
Thanks to Peter for the initial fix.
Fixes#4278
The various mapping methods are modelled after the requirements of
the Intel GPUs or rather the Mesa driver back end.
With upcoming support for other driver back ends, we need to
sequeeze their requirements in as well. For now hijack 'map_buffer'
to provide for specifying the kind of attributes the client needs.
For now all buffers mapped in the GGTT for Intel GPUs are treated
as RW.
Issue #4265.
This call allows for checking if the given execution buffer has been
completed and complements the completion signal. Initially the GPU
multiplexer always sent such a signal when the currently scheduled
execution buffer has been completed. During enablement of the 'iris'
driver it became necessary to properly check of sequence number.
In case of the Intel GPU multiplexer the sequence numbers are
continous, which prompted the greater-than-or-equal check in the
DRM back end. By hidding this implementation detail behind the
interface, GPU drivers are free to deal with sequence numbers any
way they like and allows for polling in the client, where the
completion signal is now more of a progress signal.
Issue #4265.
The current info implementation (as RPC) is limited in a few ways:
* The amount of data that may be transferred is constrained by the
underlying base platform
* Most information never changes during run time but is copied
nonetheless
* The information differs depending on the used GPU device and
in its current implementation only contains Intel GPU specific
details
With this commit the 'info' RPC call is replaced with the
'info_dataspace' call that transfers the capability for the dataspace
containing the information only. This is complemented by a client
local 'attached_info' call that allows for getting typed access to
the information. The layout of the information is moved to its own
and GPU-specific header file, e.g., 'gpu/info_intel.h'
Issue #4265.
Rather than using the dataspace capability directly, let the client
choose its own local identifier that is linked to the underlying
capability.
Fixes#4265.
* Wait for for completion before return from 'execbuffer2'. This makes
buffer execution synchronous.
* Because the Iris driver manages the virtual address space of the GPU
and creates one GEM context for each batch buffer we have to map/unmap
all buffer objects before and after batch buffer execution.
issue #4260
This patch adds a switch to internal poll function in libssh that
allows to force this function to immediately return without actually
polling for data and in consequence processing this data. This switch
is used to avoid calling callback functions when flushing output
streams which caused locks due to recursive access to internal
ssh_terminal sessions registry.
Issue #4258
This patch allows to replace sftp packet read and write with
completely asynchronous versions needed to properly hook in existing
ssh_terminal implementation.
Issue #4258
* Switch mesa support from DRI to gallium
Supported drivers are
- softpipe (Sebstian Sumpf)
- iris for Intel GPUs (Alexander Boetcher)
- etnaviv for Vivante GPUs (Josef Söntgen)
* Mesa's generated files are placed into 'contrib/mesa-<hash>/generated'
and are cloned per default from a separate Git repo in order to avoid
hash updates upon package build. In case you need to generate files
yourself use
! prepare_port mesa GENERATE_FILES=1
issue #4254
Support for iris and etnvaviv
* entaviv:
- libdrm on FreeBSD is not prepared for !PCI (and libc our is missing
<sys/pciio.h>
- missing <sys/types.h> include in xf86drmMode.c
- etnaviv relies on linux header files - dummy in $(INC_DIR)
- IOCTL FreeBSD ↔ Linux have swapped IO/OUT bit
- O_CLOEXEC differs between FreeBSD ↔ Linux
issue #4254
- remove redundant file system factory
- remove dead code block
The code was guarded by preprocessor directives checking whether the
contrib code define "_USE_MKFS" is 1. As "_USE_MKFS" is not set one
for our port of FAT, the code was never executed and can be removed.
- remove uneffective config attributes
Apparently, the former XML attributes to the plugin 'drive' and
'codepage' had no effect. I tested them in a scenario with the VFS
block server on a disk-image boot-module as back end. Regardless of
the 'drive' value, the block session label was always "0". Regardless
of the 'codepage' value, the FAT on the disk image succeeded to mount
when not using '--codepage' for 'mkfs.fat' and failed to mount when
using '--codepage' to specify a supported but foreign codepage for
'mkfs.fat' (e.g. "720").
Ref #4220
There was one global static constructor:
! namespace Fatfs { static Constructible<Platform> _platform; }
This caused applications that used the lib or the <fatfs> VFS plugin to end up
in an uncaught exception due to Genode::Component complaining that method
'construct' returned without executing pending static constructors if they
didn't call Genode::Env::exec_static_constructors().
As the use of Genode::Env::exec_static_constructors() is discouraged in Genode,
this commit rather moves the '_platform' object to the scope of the
initializing function and introduces a global static pointer to the object that
gets set by the initializing function. Although this prevents the exception, it
is, technically speaking even worse than the former solution as the new pointer
isn't checked for validity in contrast to the 'Constructible' object.
However, so far, I don't see a clean solution to this problem without the need
for Genode::Env::exec_static_constructors().
Fixes#4220
For mesa-21 the client takes care and manages
the virtual address space of the vGPU by itself and the intel/gpu driver
can't add silently a guard page anymore. Move the patch to the drm/ioctl
of the former mesa version.
Issue #4148#4233
I discovered thinkbroadband.com requires the User-Agent header field and
rejects requests missing it with HTTP response code 403 "access to the
requested resource is forbidden". Now, fetchurl always adds the
User-Agent header fetchurl/LIBCURL_VERSION.
Also the error message now contains the HTTP response code.
The symlink implementation wrongly constructed a 'Sync' object within
the context of a monitor call. The 'Sync' constructor indirectly
depended on libc I/O for obtaining the current time, ultimately
resulting in a nested attempt of a monitor call. This could be
reproduced via the base.run script:
$ cd /home
$ ln -s a b
The 'ln' command resulted in the following log message:
[init -> /bin/bash -> 7] Error: deadlock ahead, mutex=0x10ff8c70, return ip=0x500583a7
The patch fixes the problem by splitting the single monitor call into
two monitor calls and moving the construction of the 'Sync' object
in-between both monitor calls, thereby executing the constructor at the
libc application level.
Fixes#4219
- Patch the XHCI model in order to handle frame wrapping correctly. For
this adjust 'mfindex_kick' to the correct period (same, before, or after
'mfindex').
- Flush EP when it is stopped, this causes all pending packets for the EP
to be acked. Correct counting of packets in flight.
- Add BEI patch by Josef.
issue #4196
- API packages for: libusb, libuvc, and libyuv
- Source packages for: API packages + USB webcam app
- Meta package for USB webcam
- Raw package for USB webcam configuration
issue #4196
Because qemu-usb allocated host devices after 'USB_HOST_DEVICE' in the
object array and 'USB_WEBCAM' is loacated after 'USB_HOST_DEVICE' the
webcam model can overwrite an already allocated pass-through device. As
a solution add the 'USB_FIRST_FREE' to make it clear from where host
devices can be allocated. Also increase the number of supported host
devices to eight.
fixes#4182
I created a test program which stresses the interplay between libc,
pthreads and vfs_pipe and may detect regressions.
The program starts a thread that spawns a bunch of workers, sends and
receives data to them through a pipe. When all data of a worker is
collected, the worker is finished (join()) and a new worker is started.
Both the number of bytes sent to the worker and the size of its
answer are random.
Issue #3967
This patch avoids the repeated warning "read blocked until lwIP
interface is ready" by printing the message only once. Otherwise,
the log is flooded with those warnings when falkon web browser
is started on Sculpt OS without network connectivity.
The vfs pipe plugin can now be used as named pipe which anables data
transfer via file handles from one component to another. E.g. if one
would like to send data from component A to stdin of a libc component B,
one can do so by simply writing to that fifo file.
Issue #3583
With this commit libcrypto does not use ARM NEON extension as long as
SPECS includes "neon". arm_v7a does declare "neon" per default while
arm_v8a does.
Issue #3773
Note, OpenSSL now comes as one combined depot archive *openssl* that
replaces the former *libssl* and *libcrypto* archives. The libraries are
still separate binaries for compatibility with legacy software.
Issue #3773
Be more in line with the original host implementation in Qemu and
buffer transfers. Having transfers in-flight helps to smoothen playback
in case other components utilize the CPU.
Issue #4018.
Linux as well as Windows guests want queue to a varying number of
transfers, where each transfer only covers one transaction (iso frame).
The best results were obtained by following that behaviour rather
than queuing multiple iso frames per requests (like is done with OUT
transfers).
The number of requests queued is increased to 32 while the number of
packets per reques is decreased to 1.
Issue #4018.
The contrib code is updated from 2.4.1 to version 5.2.0 and the used
device-model is changed to QEMU xHCI. Due to this change older guests
OSes, namely Windows 7, that relied on the NEC xHCI device-model will
not work anymore.
The 'Qemu::Controller' interface was extended by an 'info' method, which
returns the vendor and product ID. This allows for removing the
hard-coded values in the VirtualBox glue code.
Issue #4018.
The former implemention assumed that the guest physical memory is
mapped continously. This, however, is not true. Writing larger
files to an USB stick with a Windows 10 guest would therefore lead
to data corruption.
The current implementation uses a bounce buffer to copy the data
to and from the guest physical memory and leaves dealing with the
memory mappings entirely up to the VMM.
Fixes#4017.
The 'environ' pointer is a global variable that must be considered as
part of the application state. It must be copied from the parent to the
child process during fork. Otherwise, a child returning from fork is
unable to access environment variables before invoking execve. The
actual environment variables and their values are already captured
because they reside at the application heap, which is cloned from the
parent. So the copied 'environ' pointer refers to valid data.
Fixes#4015
The _dispatch_pending_io_signals and _original_suspended_callback member
variables are not used anywhere in the code. This prompts clang to produce
a warning message about it. Remove both variables to fix it.
Issue #3985
GCC doesn't care, but clang complains if [[fallthrough]] is not followed
by a semicolon. Existing Genode code is also not consitent in this regard.
This patch adds the extra semicolons since it works in both GCC and
clang.
Issue #3985
The class has final destructor, but is not itself final. This prompts
clang to produce the following warning message:
class with destructor marked 'final' cannot be inherited from [-Wfinal-dtor-non-final-class]
~Vfs_plugin() final { }
^
vfs_plugin.h:39:13: note: mark 'Libc::Vfs_plugin' as 'final' to silence this warning
Issue #3985
This static inline function is not used anywhere. GCC does not care,
but clang warns about this. Remove the function to allow the code to
compile cleanly with both clang and GCC.
Issue #3985
The code in Libc::Cloned_malloc_heap_range initializes its local_addr
member variable by calling Region_map::attach_at. This function can
throw Region_conflict exception. The handler for this exception uses the
local_addr to produce an error message. Such error log is IHMO
useless, or even incorrect since the value of local_addr is undefined
in such case.
Its also worth noting that clang 12 produces the following warning for
this code:
"cannot refer to a non-static member from the handler of a constructor
function try block"
Issue #3985
If a fd is opened in append mode and just is to be used (so never written by
the parent component) for the to be forked child, the seek state was not
pointing to the end of the file. The wrong seek value then was used in
File_descriptor_allocator::generate_info().
Issue #3991
The fds in O_APPEND state may have changed by the child. The local seek
state needs to be valid/current for the next to be forked child, which seek
state is set by File_descriptor_allocator::generate_info().
Issue #3991
The keys, mute, touchpad toggle (Fn-F4) and rfkill may be reported by some
Fujitsu machines via the ACPI FUJ02E3 ACPI device. With this commit limited
support to detect the 3 keys are added and will be reported as Genode report.
This commit restores the diag feature for selecting diagnostic output of
services provided by core. This feature became unavailable with commit
"base: remove dependency from deprecated APIs", which hard-wired the
diag flag for core services to false.
To control this feature, three possible policies can be expressed in a
routing target of init's configuration:
* Forcing silence by specifying 'diag="no"'
* Enabling diagnostics by specifying 'diag="yes"'
* Forwarding the preference of the client by omitting the 'diag'
attribute
Fixes#3962
Log a warning when the lwIP VFS plugin queues a read while waiting
for an interface to become ready. By comparision the Lxip plugin
has the same behavior but a more verbose initialization process.
Fix#3920
This prevents later file-descriptor shortage when opening files on
demand, which can't be reflected to the application in a sane manner.
The real fix is to open socket files not on libc level but on VFS level
only effectively consume one libc file descriptor for one socket.
Now, the USB connection is established on backend initialization and
terminated on backend exit triggered by high-level libusb code.
Thanks to Peter for the patch.
With this commit, the alignment of anonymous 'mmap()' allocations can be
configured like this:
<config>
<libc>
<mmap align_log2="21"/>
</libc>
</config>
Fixes#3907
This plugin gives access to the Audio_out session by roughly
implementing a OSS pseudo-device. It merely wrapps the session and does
not provide any resampling or re-coding.
Fixes#3891.
In the same vein as the terminal and block I/O controls, the sound
controls are implemented via poperty files and match the OSS
API ([1] features a nice overview while [2] is v3 and [3] gives
in-depth information on the current v4.x API we eventually might want
to implement).
[1] https://wiki.freebsd.org/RyanBeasley/ioctlref/
[2] http://www.opensound.com/pguide/oss.pdf
[3] http://manuals.opensound.com/developer/
The controls currently implemented are the ones used by the cmus OSS
output plugin, which was the driving factor behind the implementation.
It uses the obsolete (v3) API and does not check if the requested
parameter was actually set, which should be done according to the
official OSS documentation.
At the moment it is not possible to set or rather change any
parameters. In case the requested setting differs from the parameters
of the underlying Audio_out session - in contrast to the suggestion in
the OSS manual - we do not silently adjust the parameters returned
to the callee but outright fail the I/O control operation.
The following list contains all currently handled I/O controls.
* SNDCTL_DSP_CHANNELS sets the number of channels. We return the
available channels here and return ENOTSUP if it differs from
the requested number of channels.
* SNDCTL_DSP_GETOSPACE returns amount of playback data that can
be written without blocking. For now it amounts the space left
in the Audio_out packet-stream.
* SNDCTL_DSP_POST forces playback to start. We do nothing and return
success.
* SNDCTL_DSP_RESET is supposed to reset the device when it is
active before any parameters are changed. We do nothing and return
success.
* SNDCTL_DSP_SAMPLESIZE sets the sample size. We return the
sample size of the underlying Audio_out session and return ENOTSUP
if it differs from the requested number of channels.
* SNDCTL_DSP_SETFRAGMENT sets the buffer size hint. We ignore the
hint and return success.
* SNDCTL_DSP_SPEED sets the samplerate. For now, we always return
the rate of the underlying Audio_out session and return ENOTSUP
if it differs from the requested one.
This commit serves as a starting point for further implementing the
OSS API by exploring more users, e.g. as VirtualBox/Qt5/SDL2 audio
backend or a more sophisticated progam like sndiod.
Issue #3891.
The deadlock occured with three concurrently running threads: two
waiters calling pthread_cond_timedwait() and one signaller calling
pthread_cond_signal().
If waiter W1 hits its timeout, the signaller may have called
pthread_cond_signal(), detected this waiter and posted the internal
'signal_sem' concurrently. Then, the signaller waits for 'handshake_sem'
to ensure the waiter got woken up.
Waiter W1 can't consume the 'signal_sem' post by
'sem_wait(&c->signal_sem)' because another waiter W2 may have consumed
the post already above in sem_wait/timedwait(). Waiting for a post on
'signal_sem' would block the waiter W1 in perfect deadlock with
signaller on 'handshake_sem'. As W1 also owns 'counter_mutex' in this
situation, waiter W2 would block when trying to aquire 'counter_mutex'
and can't resolve the situation.
So, W1 does nothing in this case and we accept the spurious wakeup on
next pthread_cond_wait/timedwait().
* get rid of alarm abstraction
* get rid of Timeout::Time type
* get rid of pointer arguments
* get rid of _discard_timeout indirection
* get rid of 65th bit in stored time values
* get rid of Timeout_scheduler interface
* get rid of uninitialized deadlines
* get rid of default arguments
* get rid of Timeout::_periodic
* get rid of Timeout::Raw
* use list abstraction
* only one interface for timeout handlers
* rework locking scheme to be smp safe
* move all method definitions to CC file
* name mutexes more accurate
* fix when & how to set time-source timeout
* fix deadlocks
Fixes#3884
In case of contexts blocked in select() the monitor updates the
file-descriptor status, but if the entrypoint is just blocked for the
select handler, the status must be updated explicitly on
dispatch_select().
Like already done for terminal I/O controls use collect the information
by reading property files instead of using the old VFS ioctl interface.
Fixes#3888.
There is a type mismatch as in the FreeBSD contrib code the type of the
request is 'unsigned long'. So far, only I/O controls where the request
falls into the signed range where used and this was not a problem.
Some of the SNDCTL requests, however, have the bit set.
Fixes#3887.
This patch is a follow-up for the commit "libc: use monitor for fork".
It removes the use of the monitor mechanism from the
'Local_clone_service::close' RPC function because the fork_ep must stay
responsive for the destruction and creation of 'Child' objects.
Issue #3874
The combination of Net::Mac_address and
Genode::ascii_to(Net::Mac_address) required shaky quirks in several
places because GCC is not able to resolve the ascii_to overload if
base/xml_node.h was included to early. The current solution moves the
several ascii_to overloads "closer" to the Net types by putting them
into the Net namespace, where GCC reliably picks them up.
Hence, co-locating the ascii_to() utility with the overload type in the
same scope/namespace is good practice.
This patch removes the now obsolete <nic/xml_node.h> header file.
Normally CLOCK_REALTIME is used. However libraries, like glib, want to
use CLOCK_MONOTONIC. To make those users happy add setting the clock.
Note, the pthread_cond implementation uses the POSIX semaphore API
internally that does not have means to set the clock. For this reason,
the private 'sem_set_clock' function is introduced.
Fixes#3846.
This patch untangles the dependency of VFS operations that need RTC
information from the 'clock_gettime' libc function that must never be
called from the libc kernel context.
- The 'Rtc' class uses the VFS directly for reading the rtc file instead
of relying on libc functions.
- The 'Rtc' instance has become part of the 'Kernel' instead of
being construced as a side effect of the first call of
'clock_gettime'.
- Changed 'Rtc::read' to return a timespec value, which has a higher
precision than the formerly used time_t value.
- The 'Rtc::read' returns a value with the relative 'current_time'
already applied. The former handling of subsequent rtc-value
updates has been rewritten to become more logical.
- The 'Vfs_plugin' no longer calls 'clock_gettime' but the new
kernel-level 'Current_real_time' interface.
Issue #2635
This patch untangles the interplay of the base library and the libc
during the exit handling.
- The CXA ABI for the atexit handling is now provided by the libc.
For plain Genode components without libc dependency, __cxa_atexit
is a no-op, which is consistent with Genode's notion of components.
- The 'abort' implementation of the base library no longer calls
'genode_exit' but merely 'sleep_forever'. This way, the cxx library
no longer depends on a 'genode_exit' implementation.
- The libc provides 'atexit' support by storing metadata on the
libc kernel's heap now, thereby eliminating the former bounded
maximum number of atexit handlers.
- Shared-library dtors are no longer called via the atexit mechanism
by explicitly by the dynamic linker. This slightly changes the
call order of destructors (adjustment of the ldso test). Functions
marked as destructors are called after the atexit handlers now.
- The libc executes atexit handlers in the application context,
which supports the I/O operations in those handles, in particular
the closing of file descriptors.
Fixes#3851
* enable all common warnings through default value of CC_ADA_WARN
* treat warnings like errors through default value of CC_ADA_WARN_STRICT
* enable almost all style checks through default value of CC_ADA_WARN_STRICT
* style fixes for aes_cbc_4k
* disable strict warnings and style checks for libsparkcrypto and spark lib
Ref #3848
This remove the call to Io_progress_handler::handle_io_progress() from
wait_and_dispatch_one_io_signal() to prevent unexpected nesting
I/O-progress handling in case of custom dispatch loops (e.g., in libc).
The original intention of Io_progress_handler was to inform the
entrypoint just before blocking in the entrypoint loop.
Issue #2635
This patch replaces the use of the "Framebuffer" session interface by
the new "Capture" session interface in all framebuffer drivers. Thanks
to this change, those drivers have become mere clients of the nitpicker
GUI server now, and are no longer critical for the liveliness of the GUI
server.
The patch touches the following areas:
- The actual driver components. The new versions of all drivers have
been tested on the respective hardware. Generally, the drivers
have become simpler.
- The drivers_interactive packages for various boards. The drivers
subsystem no longer provides a "Framebuffer" service but needs a
valid route to the "Capture" service provided by nitpicker.
- The driver manager of Sculpt OS.
- This patch changes the role of the test-framebuffer component from a
framebuffer client to a capture server so that drivers (capture clients)
can be directly connected to the test component without the nitpicker
server.
- Framebuffer driver no longer support the unbuffered mode.
- The fb_bench.run script is no longer very meaningful because it
interplays solely with nitpicker, not with the driver directly.
- All run scripts for graphical scenarios and the related depot
archives got adapted to the change.
Fixes#3813
